The KH 1428 PP MTM is a compact, high-precision linear ball bushing (also known as ball bearing sleeve) featuring a 14 mm bore, 21 mm outer diameter, and 28 mm length. It comes double-sealed (PP) for enhanced protection against dust and contamination, pre-lubricated, and ready to use—well-suited for tight-space applications in automation, CNC systems, 3D printing, and industrial machinery.
📍 Warehouse & Shop: Lublin, Smoluchowskiego 1, Bldg 4
🚚 24h Dispatch - Nationwide & International Shipping
| Feature | Specification |
|---|---|
| Model | KH 1428 PP MTM |
| Type | Compact linear ball bushing (sealed both ends) |
| Bore Diameter (d) | 14 mm |
| Outer Diameter (D) | 21 mm |
| Length (B) | 28 mm |
| Material | Chrome steel outer, plastic ball cage |
| Seal Type | PP - double lip seal for dust protection |
| Dynamic Load (C) | ~520 N |
| Static Load (C₀) | ~620 N |
| Weight | ~0.02 kg (20-21 g) |
| Max Temp | Up to +120 °C |
| Cage | Plastic, ensures smooth recirculation |
| Pre-lubricated | Yes - factory-filled light oil |
Compact CNC machines & 3D printers
Industrial automation & pick-and-place systems
Robotic actuators & linear axes
Packaging equipment & material handling
Laboratory instruments & analytical devices
Space-constrained linear guidance systems
Q1: What does “PP” mean?
A1: “PP” stands for double lip seals, protecting against contaminants and increasing durability.
Q2: Do I need to lubricate it before use?
A2: No—this bushing is factory-lubricated and ready for use, though you can top-up lubrication via grease port.
Q3: What materials are used?
A3: The outer shell is chrome steel, and the ball cage is durable plastic.
Q4: Is it suitable for tight spaces?
A4: Yes—its low-profile, compact design fits applications with limited radial clearance.
Q5: When will my order ship?
A5: Orders placed before 14:00 CET ships same day from Lublin. We offer 24h delivery across Poland and fast international shipping.
The KH 1428 PP MTM is a compact, sealed linear ball bushing (14x21x28 mm) offering superior protection and smooth motion right out of the box. With high load ratings (~520 N dynamic, 620 N static), factory lubrication, and double sealing, it’s designed for precision tasks in CNC, automation, and compact machinery—available now from our Lublin warehouse with 24h dispatch and global shipping.
📍 Warehouse & Shop: Lublin, Smoluchowskiego 1, Bldg 4
🚚 24h Dispatch - Nationwide & International Shipping